20404740532325 has 12 divisors (see below), whose sum is σ = 25534005586980. Its totient is φ = 16174032860160.

The previous prime is 20404740532301. The next prime is 20404740532349. The reversal of 20404740532325 is 52323504740402.

It is an interprime number because it is at equal distance from previous prime (20404740532301) and next prime (20404740532349).

It can be written as a sum of positive squares in 6 ways, for example, as 746874241 + 20403993658084 = 27329^2 + 4517078^2 .

It is a de Polignac number, because none of the positive numbers 2^k-20404740532325 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3743986364 + ... + 3743991813.

It is an arithmetic number, because the mean of its divisors is an integer number (2127833798915).

Almost surely, 2^{20404740532325} is an apocalyptic number.

20404740532325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20404740532325 is a deficient number, since it is larger than the sum of its proper divisors (5129265054655).

20404740532325 is a wasteful number, since it uses less digits than its factorization.

20404740532325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7487978296 (or 7487978291 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 41.

The spelling of 20404740532325 in words is "twenty trillion, four hundred four billion, seven hundred forty million, five hundred thirty-two thousand, three hundred twenty-five".